Animal Ordinances in Contra Costa County, CA (2026)
11 county-level rules, plus city-specific rules for 9 cities in Contra Costa County, California.
Verified from official government sources
Chickens & Livestock
Chapter 82-50 (Urban Farm Animals) of the County Ordinance Code permits residents in unincorporated single-family and two-family residential zones to keep hens, fowl, rabbits, beehives, and livestock subject to lot-size minimums, structure-setback rules, and a 12-foot maximum height for coops; the rules do not apply in the Urban Farm Animal Exclusion (UE) zoning overlay in parts of Bethel Island, Byron, Diablo, Discovery Bay, and Knightsen.
Urban Farm Animals Ordinance: hens, livestock, beekeeping
Some RestrictionsContra Costa County Ordinance Code Ch. 82-50 (Urban Farm Animals), §§ 82-50.404, 82-50.406, 82-50.408
Residents on a lot without the UE zoning overlay in any single-family residential or two-family residential district, or a single-family residential lot in a P-1 planned unit district can keep the following farm animals (County Code Sections 82-50.404, 82-50.406, 82-50.408): Female Domesticated Chicken (Hen) - 1 per 1,000 sq. ft. of lot area, up to 20 hens; ... Livestock - 2 per 40,000 sq. ft. ...
Dog Leash Laws
Unincorporated Contra Costa County requires dogs to be leashed in public, with leashes capped at 6 feet. Dogs must be licensed by 4 months old with current rabies vaccination; at-large violations start around $100 plus impound fees.
Animals: Dog Leash Laws
Light RestrictionsContra Costa County Animal Services — Leash Law (Code §416-4.402) and Licensing (Code §416-6.002; CA Health & Safety Code §121690)
Yes, your dog must be on a leash and under your control unless s/he is on your property, the property of a consenting adult, or on property such as a dog park where the off-leash conditions are designated by appropriate signage or regulation(s). Contra Costa County enforces a 'leash law,' which forbids dogs from being at large or 'loose' (with certain exemptions). See County Code Animal Ordinan...
Breed Restrictions
Contra Costa County does not impose breed-specific restrictions on pit bulls or any other dog breed. Chapter 416-18 of the Animal Ordinance (formerly Article 416-12.4) regulates dangerous and potentially dangerous animals based solely on documented behavior, consistent with California Food & Agricultural Code § 31683, which preempts local breed-specific bans on ownership.
No breed-specific bans; dangerous-dog rules are behavior-based
Light RestrictionsContra Costa County Ordinance Code § 416-12.404 (Dangerous animal) (recodified to Chapter 416-18 by 2020 amendment)
Any animal, except a dog assisting a peace officer engaged in law enforcement duties that demonstrates any of the following behavior, is a 'dangerous animal': (1) Any animal that, when unprovoked, inflicts severe injury on or kills a human being who is conducting himself or herself peaceably and lawfully. A 'severe injury' within this chapter means any physical injury to a human being that resu...
Beekeeping
Beekeeping is allowed in most unincorporated Contra Costa County residential and agricultural zones subject to hive setbacks (typically 10–20 feet from property lines) and registration with the County Agricultural Commissioner. Africanized-bee incidents trigger mandatory requeening.
Animals: Beekeeping
Some RestrictionsCalifornia Food & Agricultural Code § 29040
Every person that is the owner, broker, or is in possession of an apiary that is located within the state, on the first day of January of each year, shall register the number of colonies in each apiary that is owned or possessed by the person and the location of each apiary. Every person required to register under this article, shall do so on the first day of January of each year in which they ...
Exotic Pets
Exotic and wild animals are broadly prohibited in unincorporated Contra Costa County. California Fish and Game Code restricts ownership of venomous snakes, big cats, primates, and most non-domestic species. Permits through CDFW are rare and tightly limited.
Animals: Exotic Pets
Significant RestrictionsCA Dept. of Fish and Wildlife
Required for every new permit, permit renewal or amendment of an existing permit, nonrefundable. Restricted Species Permit Inspection 1-5 Enclosures: $319.50 6-25 Enclosures: $448.00 26-50 Enclosures: $730.00 51-100 Enclosures: $1,147.50 101-500+ Enclosures: $4,234.50 Aquaculture: $2,124.75 ELE/MOU: $619.25 Required for every new permit or renewal of an existing permit. New and Renewal Inspecti...
Wildlife Feeding
Wildlife in unincorporated Contra Costa County is regulated primarily by California Department of Fish and Wildlife (CDFW). It is illegal to feed deer, coyotes, raccoons, or wild turkeys. Depredation permits are required to remove protected wildlife damaging property.
Animals: Wildlife
Heavy RestrictionsCA Dept. of Fish and Wildlife
Human-wildlife conflict (HWC) can occur when humans encounter or interact with wild animals in an unwanted or unsafe way. In California, habitat loss and a changing climate have increased the frequency and type of HWC reported to CDFW. It has become more common for people to be "living with wildlife" as communities grow along the urban-wildlands interface and wildlife look for limited resources...
Pet Limits
Under Chapter 416-6 of the Contra Costa County Animal Ordinance, no household in a non-agricultural zone may keep more than three dogs or more than five cats over six months old for more than 30 days without first obtaining a multiple pet license from the Animal Services Director; commercial-scale keeping requires a kennel license.
Multiple-pet license required above 3 dogs or 5 cats
Some RestrictionsContra Costa County Ordinance Code Chapter 416-6 (Individual Licenses) - multiple pet license provision
No more than three dogs and no more than five cats over six months of age may be kept, harbored, possessed or maintained for more than thirty days in a single dwelling or business unit without a multiple pet license in an area zoned for uses other than agriculture.
Mandatory Spay/Neuter
Contra Costa County's Animal Services Department requires spay or neuter surgery before releasing certain impounded dogs. An unlicensed, unaltered dog picked up under Section 416-8.002 must be fixed before it goes home. A licensed dog gets one free pass: the first impoundment in a rolling three-year period, it's released intact, but a second triggers mandatory surgery.
Contra Costa Impound Spay-Neuter Rule
Some RestrictionsContra Costa County Ordinance Code § 416-8.018
(a)Unlicensed Dogs. Any unlicensed, unaltered dog impounded under Section 416-8.002 must be spayed or neutered prior to its release from the animal services department unless the dog is exempted from the license requirements under subsection (a) of Section 416-6.004 or has a medical exemption under subsection (d) of this section.(b)Licensed Dogs—First Impoundment Within a Three-Year Period. Any...
Microchipping
Contra Costa County's Animal Services Department will not release an impounded dog or cat without a microchip. Section 416-8.020 requires every animal picked up under Section 416-8.002 to be implanted with microchip identification before it goes home, and the department does the implant itself if the animal doesn't already have one.
Contra Costa Impound Microchip Rule
Some RestrictionsContra Costa County Ordinance Code § 416-8.020
(a)Microchip Identification Required at Time of Release. All dogs and cats impounded under Section 416-8.002 must be implanted with microchip identification before being released from impoundment to their owners.(b)The animal services department will perform the microchip implantation procedure, at the owner's expense, on any dog or cat that does not already have microchip identification before...
Veterinary Clinic Zoning
Contra Costa County zoning treats a veterinary clinic as a conditional use, not a by-right business. In the unincorporated county's R-B Retail Business, C-B Community Business, and O-1 Limited Office districts, the Ordinance Code lists "animal hospital" among uses that require a discretionary land use permit from the zoning administrator before the practice can open its doors.
Contra Costa Requires a Permit for Vet Clinics
Some RestrictionsContra Costa County Ordinance Code § 84-52.404(4)
In the R-B district the following uses are permitted after the issuance of a land use permit: (1)Lumber yard;(2)Cabinet shop;(3)Sheet metal shop;(4)Animal hospital;(5)Commercial dog kennel;(6)Hobby dog kennel;(7)Auto garage which includes body repair and painting;(8)Building contractor's yard;
Bird Protection
Unincorporated Contra Costa County allows coops, cages, pens and other bird enclosures for pigeons and other non-poultry birds on single-family and two-family residential lots, but caps their footprint at one square foot per fifty square feet of lot area, twelve feet in height, and requires them to sit well off every property line.
Contra Costa County Bird Enclosure Standards
Some RestrictionsContra Costa County Ordinance Code §§ 82-50.602, 82-50.604
82-50.602 - Location requirements. A bird enclosure is allowed on any lot in a single-family residential district (R-6, R-7, R-10, R-12, R-15, R-20, R-40, R-65, and R-100), a planned unit (P-1) district for which single-family residential uses are approved, or a two-family residential (D-1) district. 82-50.604 - Standards. (a)The maximum size of a bird enclosure is one square foot per fifty squ...
Animal Ordinances by City in Contra Costa County
9 cities in Contra Costa County have their own animal ordinances rules. Each link goes to that city's dedicated page with code citations.
3 verified rules • Beekeeping, Breed Restrictions
2 verified rules • Beekeeping, Breed Restrictions
14 verified rules • Beekeeping, Bird Protection
7 verified rules • Beekeeping, Bird Protection
2 verified rules • Breed Restrictions, Exotic Pets
1 verified rule • Wildlife Feeding
10 verified rules • Beekeeping, Bird Protection
2 verified rules • Breed Restrictions, Chickens & Livestock
2 verified rules • Beekeeping, Breed Restrictions
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